Appetite regulation pathways in the brain

"Appetite regulation pathways in the brain" refers to an integrated network of neural circuits—primarily located in the hypothalamus and brainstem—that coordinate signals from peripheral organs with central processing centers to control hunger, satiety, and overall energy balance. Key regions include the arcuate nucleus of the hypothalamus containing neurons that either stimulate appetite via neuropeptide Y/agouti-related peptide or suppress it via pro-opiomelanocortin/cocaine-and amphetamine-regulated transcript. These neurons project to other hypothalamic nuclei such as the paraventricular nucleus which further modulate feeding behavior. The brainstem receives visceral sensory input through vagal afferents relaying information about gastrointestinal distension and nutrient content. Hormones like leptin, insulin, ghrelin, cholecystokinin (CCK), peptide YY (PYY), among others interact with these neural networks to fine-tune food intake according to metabolic needs. Dysregulation in any component can contribute to diseases such as obesity or anorexia nervosa[1][2][3][5][7]. Note: This entry does not correspond to a single canonical molecule/receptor/target but rather describes an entire physiological system composed of multiple interacting molecules and neuronal populations. For structured data extraction purposes focused on drug discovery or biomarker identification at the molecular level, it is recommended instead to specify individual targets within this system—such as "Melanocortin 4 receptor," "Neuropeptide Y receptor," "Leptin receptor," etc.—rather than referring broadly to all appetite regulation pathways in the brain. Summary judgment: "Appetite regulation pathways in the brain" is not itself a therapeutic target but rather encompasses many distinct targets involved in energy homeostasis[6].

Other names

Appetite regulation pathwaysCentral appetite regulationBrain appetite circuitsHypothalamic appetite pathways